1000043062621 has 2 divisors, whose sum is σ = 1000043062622. Its totient is φ = 1000043062620.

The previous prime is 1000043062511. The next prime is 1000043062649. The reversal of 1000043062621 is 1262603400001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 916557316900 + 83485745721 = 957370^2 + 288939^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000043062621 - 2⁷ = 1000043062493 is a prime.

It is a super-2 number, since 2×1000043062621² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000043062691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500021531310 + 500021531311.

It is an arithmetic number, because the mean of its divisors is an integer number (500021531311).

Almost surely, 2^{1000043062621} is an apocalyptic number.

It is an amenable number.

1000043062621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000043062621 is an equidigital number, since it uses as much as digits as its factorization.

1000043062621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1000043062621 its reverse (1262603400001), we get a palindrome (2262646462622).

The spelling of 1000043062621 in words is "one trillion, forty-three million, sixty-two thousand, six hundred twenty-one".